settle down vs change state

settle down and change state both are verbs.

Word	Noun	Adjective	Verb	Adverb
settle down	No	No	Yes	No
change state	No	No	Yes	No

As verbs, change state is a hypernym of settle down; that is, change state is a word with a broader meaning than settle down:

Other hypernyms of settle down include turn.

settle down (verb)	change state (verb)
become settled or established and stable in one's residence or life style	undergo a transformation or a change of position or action
become quiet or calm, especially after a state of agitation
settle into a position, usually on a surface or ground